/**

 * Relational pipes (library)

 * Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info)

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the:

 *  - GNU Lesser General Public License as published by the Free Software Foundation;

 *  - GNU General Public License as published by the Free Software Foundation;

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

#pragma once

#include <sstream>

#include <functional>

#include "DataTypeReaderBase.h"

namespace relpipe {

namespace reader {

template<typename T> class DataTypeReader : public DataTypeReaderBase {

public:

	DataTypeReader(const TypeId typeId, const string_t typeCode) : DataTypeReaderBase(typeId, typeCode) {

	}

	virtual ~DataTypeReader() {

	};

	virtual T readValue(std::istream& input) = 0;

	virtual string_t readString(std::istream &input) {

		return toString(readValue(input));

	}

	virtual void read(std::istream &input, std::function<void(const void *, const std::type_info&) > handler) override {

		T value = readValue(input);

		handler(&value, typeid (T));

	}

	virtual void read(std::istream &input, std::function<void(const string_t&, const void *, const std::type_info&) > handler) override {

		T value = readValue(input);

		handler(toString(value), &value, typeid (T));

	}

	virtual string_t toString(const T& value) = 0;

};

}

}